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利用人工重复震源进行地下介质结构及其变化研究的探索和进展???
王宝善1) 葛洪魁2) 王彬3) 王海涛4) 张元生5) 蔡辉腾6) 陈颙1)
1)中国地震局地球物理研究所地震观测与地球物理成像重点实验室,北京市民族大学南路5号 100081;2)中国石油大学(北京),北京 102249;3)云南省地震局,昆明 650224;4)新疆维吾尔自治区地震局, 乌鲁木齐 830011;5)中国地震局兰州地震研究所, 兰州 730000;6)福建省地震局, 福州 350003
摘要:
在自然和人为活动的作用下,地球内部的介质会产生变化。通过分析来自重复地震、背景噪音和重复性人工震源等的地震波,研究地球介质的变化是近年来地震学研究的一个热点方向,这些研究为人类认识地震、火山等灾害的物理过程提供了重要的手段。本文介绍了过去10余年中我们在利用人工震源(尤其是大容量气枪震源)探究地下介质结构及其变化方面的研究进展,以期为今后类似的研究提供参考。本文首先介绍了不同类型震源性能的探索、数据处理方法等方面的研究进展和主要认识,最后也给出了关于下一步人工震源研究方向的思考。
关键词:  人工重复震源  大容量气枪  地下介质变化
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基金项目:
Practices and Advances in Exploring the Subsurface Structure and Its Temporal Evolution with Repeatable Artificial Sources
Wang Baoshan1) , Ge Hongkui2) , Wang Bin3) , Wang Haitao4) , Zhang Yuansheng5) , Cai Huiteng6) , andChen Yong1)
1) Key Laboratory of Seismic Observation and Geophysical Imaging, Institute of Geophysics, CEA, Beijing 100081, China;2) China Petroleum University (Beijing), Beijing 102249, China;3) Earthquake Administration of Yunnan Province, Kunming 650224, China;4) Earthquake Administration of Xinjiang Uygur Autonomous Region Urumqi 830011, China;5) Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China;6) Earthquake Administration of Fujian Province, Fuzhou 350003, China
Abstract:
The Earth’ s structure may change with time under natural or anthropogenic loading. Monitoring the subtle changes of the subsurface structure with repeatable seismic sources such as repeating earthquakes, ambient seismic noise and artificial sources has become one a hot topic in seismological research. These studies provide important clues in understanding the physical process of hazardous events such as earthquakes and volcanic eruptions. In this review we introduce the practices and advances in exploring and monitoring the subsurface structure with artificial seismic sources. This review is orgainzed as follows; Firstly, we describe the studies on the characteristics of different types of seismic source (especially the airgun source). Then the advances on data processing and mechanical understanding are depicted. At the end of this review, we reveal the prospects of future study of exploration and monitoring of the subsurface structure and its temporal variations using artificial sources.
Key words:  Artificial source  Large volume airgun  Subsurface changes